Pursuing Stacks

Alright kiddo, let's talk about something called "pursuing stacks". Imagine you have a bunch of different toys and you want to play with them in a certain order. You might start by playing with your blocks, then move onto your action figures, and then finish off by coloring in your coloring book. That's kind of like what a computer does when it uses something called a "stack".

A stack is like a big pile of papers, and the computer puts things on top of the stack one by one as it works through a problem. When it's done using something, it takes it off the top of the stack and moves on to the next thing.

Now imagine a situation where the computer needs to use something over and over again, but it keeps having to take it off the top of the stack and then put it right back on again. That's like playing with your blocks, and then putting them away, and then immediately taking them back out to play with them again. It's kind of a waste of time, isn't it?

So what the computer can do is something called "pursuing stacks". It takes the thing it needs to use over and over again, and puts it at the bottom of the stack. That way, it can easily access it again and again without having to spend as much time rearranging the stack. It's like putting your favorite toy at the bottom of the toy box so you can quickly find it again later.

Overall, pursuing stacks helps the computer work through problems more efficiently and quickly by making sure it can access important information without wasting time putting everything else back in place.